title: Solvent and substituent effects on the photochemistry of norbornadiene-diarylacetylene Pauson-Khand adducts.
abstract: The photochemistry of Pauson-Khand cycloadducts of norbornadiene with a series of bis-aryl alkynes has been studied. Two types of photochemical transformation take place: photorearrangement to tricyclic ketones or photochemical 6π electrocyclization. High selectivity levels have been attained for each pathway, controlled by the polarity of the solvent, irradiation wavelength, and presence (or absence) of oxygen.
authors.affiliation: Unitat de Recerca en Síntesi Asimètrica (URSA)-PCB, Institute for Research in Biomedicine (IRB) Barcelona, Departament de Química Orgànica, Universitat de Barcelona, Barcelona, Spain.
authors.forename: Yining
authors.initials: Y
authors.lastname: Ji
authors.forename: Xavier
authors.initials: X
authors.lastname: Verdaguer
authors.forename: Antoni
authors.initials: A
authors.lastname: Riera
mesh_terms: D000480:Alkynes / Q000737:chemistry*; D003517:Cyclopentanes / Q000737:chemistry*; D015394:Molecular Structure; D009636:Norbornanes / Q000737:chemistry*; D010100:Oxygen / Q000737:chemistry*; D010777:Photochemistry; D012997:Solvents / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D000480:Alkynes; D003517:Cyclopentanes; D009636:Norbornanes; D012997:Solvents; D010100:Oxygen